How can a member change their language preference to French or back to English via the member portal

How can a member change their language preference to French

The My Info Tile must be enabled under Tools--> system settings --> Show MY INFO Tile: must be enabled.

Login to the Member Portal

Under Account Details click Change Preferred Language 

 Change drop down to French and click Update Preferred Language 

If Account Details does not appear after logging into the Member Portal on the left menu bar click MY INFO.